Chlamydia is a bacterial infection that is transmitted sexually, and is increasing along with the increased frequency of sexual encounters among women, with 54 million new cases each year worldwide. Women are more susceptible than men due to their different anatomy, and they are more vulnerable to its complications because the infection often begins without symptoms in women. Young women (<25 years) can run into serious complications more easily, such as pelvic inflammatory disease (PID), an extended and painful inflammation involving the female genital tract (uterus, fallopian tubes and/or ovaries) and sometimes even the nearby pelvic organs. PID, if neglected, can lead to tubal infertility, and significantly increases the risk of ectopic pregnancy.